| 4～5μm全固化可调谐激光实验研究 |
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| 引用本文： | 卞进田,秦树军,聂劲松,孙晓泉.4～5μm全固化可调谐激光实验研究[J].中国激光,2006,33(1):9-12. |
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| 作者姓名： | 卞进田 秦树军 聂劲松 孙晓泉 |
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| 作者单位： | 1. 中国人民解放军电子工程学院光电系,安徽,合肥,230037
2. 科苑集团博士后流动站,安徽,合肥,230088 |
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| 摘 要： | 报道了采用KTP晶体和LiIO3晶体实现4~5μm可调谐激光输出的光参量振荡器(OPO)至差频产生器(DFG)的全固化结构和相应的实验结果。其中光参量振荡器的抽运源为倍频Nd∶YAG激光,差频产生器的抽运源分别是上述光参量振荡器激光和Nd∶YAG基频激光经KTP倍频晶体后剩余的1.064μm激光。实验中Nd∶YAG基频脉冲激光脉宽12 ns,单脉冲能量300 mJ。观察到最大倍频效率达到66.7%,KTP参量量子转换效率达到50%,差频量子转换效率为1.5%,在4.45μm得到了单脉冲100μJ的激光输出。差频光的调谐范围为4.1~4.5μm,发散角为垂直方向12 mrad,水平方向4 mrad。
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| 关 键 词： | 非线性光学 光学差频产生器 光参量振荡器 角度调谐 相位匹配 |
| 文章编号： | 0258-7025（2006）01-0009-04 |
| 收稿时间： | 2005-07-06 |
| 修稿时间： | 2005-09-20 |
Experimentation of Tunable All-Solid-State Laser Producing 4-5 μm Radiation |
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| BIAN Jin-tian,QIN Shu-jun,NIE Jin-song,SUN Xiao-quan.Experimentation of Tunable All-Solid-State Laser Producing 4-5 μm Radiation[J].Chinese Journal of Lasers,2006,33(1):9-12. |
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| Authors: | BIAN Jin-tian QIN Shu-jun NIE Jin-song SUN Xiao-quan |
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| Abstract: | An all-solid-state LiIO3 difference frequency generator (DFG), pumped by a singly resonant KTP optical parametric oscillator (OPO) pumped by the second harmonic of a pulsed Nd:YAG laser, which have a pulse width of 12 ns and pulse energy of 300 mJ, operating at 1.064 μm and the fundamental frequency Nd:YAG laser, is experimentally demonstrated and analyzed. The maximum frequency-doubling conversion efficiency is 66.7%; quantum conversion efficiency of KTP OPO is 50%; the quantum conversion efficiency of difference frequency generator is 1.5%, and 100 μJ energy of single pulse is achieved at 4.45 μm wavelength. The frequency tuning range is 4.1～4.5 μm. The beam divergence is 12 mrad in vertical direction and 4 mrad in horizontal direction. |
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| Keywords: | nonlinear optics optical difference frequency generator optical parameter oscillator angle tuning phase matching |
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